package org.csmzxy.class2334;

public class Exampla08 {
    public static void add(){
        StringBuffer s = new StringBuffer();
        s.append("itheima");
        System.out.println("在末尾添加字符串的结果:"+s);
        s.insert(2,"cast");
        System.out.println("第3个位置插入字符串的结果:"+s);
    }
    public static void modify(){
        StringBuffer s = new StringBuffer("itheima");
        s.setCharAt(2,'s');
        System.out.println("修改第2个字符的结果:"+s);
        s.replace(2,7,"cast");
        System.out.println("替换第3个到第7个字符的结果:"+s);
        s.reverse();
        System.out.println("反转字符串s的结果:"+s);
    }
    public static void delete(){
        StringBuffer s = new StringBuffer("itheima");
        s.deleteCharAt(1);
        System.out.println("删除第2个字符的结果:"+s);
        s.delete(0,1);
        System.out.println("删除第1个到第2个字符的结果:"+s);
    }
    public static void main(String[] args){
        System.out.println("1.添加操作---------------------------------");
        add();
        System.out.println("2.修改操作---------------------------------");
        modify();
        System.out.println("3.删除操作---------------------------------");
        delete();
    }
}
